> >>> >> I will send acp results soon.> >>> > Would you please take reiserfs into account?> > As of now not (lack of time) but I'm pretty close to consider XFS in> the game. Whenever I will have more time and there won't be a pressure> on giving host back to production I will redo same tests for reiserfs.> > Now I'm focused on the userspace sorting results.

reiserfs should have results very similar to ext4. The directoryhashing used by reiserfs is going to result in a very random readpattern.

XFS will probably beat btrfs in this test. Their directory indexesreflect on disk layout very well.